Hatz Biplane Association

Thank You

It's about 66 1/2" from the leading edge of the lower wing to the front of my prop flange.
Mark

Mark…… Would it be too much to ask that next time you are near your Hatz, please take a tape measure and find out what the measurement is from the prop flange to the datum? I don't need a precise measurement from leveled aircraft……. Just a measurement.

Please……. Thank you.

J/C GTF

Here is the info that I used to create the W&B for our Hatz: http://www.hatzbiplane.com/BratzCG.html

I've also attached a xls file that I used for a while to plot our W&B.

The upper longerons were used for the leveling points. I don't know the distance from the datum to the prop flange. It wasn't a dimension required for the calculations, so we didn't measure it.
Mark

Thanks for the reply and info Mark! What did you use as a leveling point? We were thinking the upper longeron.

Ben

What is the distance from the datum to your prop flange?

Here are the figures for NX1279 level using the lower wing l/e as the datum.
Right main 447 lbs @ -14.25"
Left main 457 lbs @ -14.25"
T/w 48 lbs @ 152.5"
Stagger 24"
L/E of MAC -13.2" (.55 x -24")
C/P limits of 18%-33% MAC = -4.2" to +3.3"
Arms:
Fuel -4.25"
Passenger -4.0"
Pilot 30.25"
Baggage 57.5"

Mark

Hello all,
I'm trying to help a friend who just purchased a CB-1. The weight and balance for the plane was lost and we are trying to create a new one. Any info on the weighing procedure, C.G. limits, or a sample weight and balance would be greatly appreciated!
Thanks,
Ben
rumbley1@yahoo.com